Structure for lettering scribers



June 15, 1965 e. a. HANSEN ETAL STRUCTURE FOR LETTERING SCRIBERS Filed Aug. 12, 1963 N W 4 4 E 2 mm? W W. m Er QIV W r N B T .mp I L A 2 m4 mm/ w W United States Patent Utah Filed Aug. 12, 1963, Ser. No. 301,556 2 Claims. (Cl. 120-98) The present invention relates to lettering scribers, and, more particularly, to certain improvement structure for lettering scribers wherein the popular drawing pens currently used in ruling pen contexts may be employed in scriber apparatus and, hence, enable the user to duplicate line weight in all parts of a particular drawing where desired, for example.

Lettering equipment currently used in mechanical drawing and in other contexts includes a lettering scriber in combination with one of a plurality of templates of various types. The scriber is used for duplicating characters on the template, and these characters may be letters, numbers, electrical symbols, and so forth.

The lettering scribers above referred to generally come in lettering sets which include a plural number of scriber pens of various sizes which give varying line weights (i.e. thicknesses). In conventional practice a draftsman or artist is supplied with a lettering scriber set (including scriber, a set of pen points tor the scriber, and a plural number of desired templates); he is also supplied with a set of fountain pen type, mechanical drawing pens which operate on a plunger principle and are now quite generally used in preference to the old-fashioned ruling pens. These presently preferred mechanical pens have proven very suitable for fast line work. Many of these pens are manufactured in Germany and are sold under the tradeinark Rapid-O-Graph and Korinoor. Such pens have caps and include threaded portions on their barrels for receiving the pens caps. It would of course be desirable to use the same drawing pens for scriber work in order to eliminate the need for separate scriber inking points and also to insure that line weights of scribed portions of the drawing and general line work thereof is identical.

Now different types of mechanical drawing pens, while including caps threaded onto the pen barrels, nonetheless vary in dimension and in outer contour and, furthermore, the threaded portions thereof may be proximate or quite remote from the pen point.

Accordingly, it is a principal object of the present invention to adapt conventional scriber equipment for employment of mechanical drawing pens of the plunger type wherein the threaded portions of the pen barrels may be utilized to facilitate mounting of the pen to a lettering scriber.

Another object is to provide new and useful scriber structure. f

A further object of the invention is to provide for adjustability in the vertical orientation of a mechanical drawing pen when the same is included in modified scriber structure designed to accommodate such pens.

A further object of the invention is to provide in a lettering scriber a writing tool holder which will accommodate either one or a number of difierent types of mechanical drawing pens.

A further object of the invention is to provide a scriber wherein the identical pens used for drawing purposes may also be employed for lettering, numbering, symbols schematic designations, and so forth.

A further object is to provide adjustable slot means in a .writing tool holder for lettering scribers which may facilitate pen placement as the same is inserted into a scriber holder preparatory to usage of the scriber.

A further object is to provide a versatile attachment for conventional scriber apparatus, which attachment 3,189,005 Patented June 15, 1965.

ICC

serves as a holder of one of a selected number of drawing pens.

The features of the present invention which are believed to be novel are set forth with particularity in the appended claims. The present invention, both as to its 0rganization and manner of operation, together with further objects and advantages thereof, may best be understood by re-ference to the following description, taken in connection with the accompanying drawings in which:

FIGURE 1 is a perspective, exploded vie-w of conventional scriber apparatus in combination with the scriber attachment of the present invention; this attachment shall hereinafter be referred to as a writing tool holder, and this whether the same is an integral part of or is releasably aflixed to the scriber apparatus.

FIGURE 2 is a side elevation of the writing tool holder shown in FIGURE 1 exploded away from the scriber proper.

FIGURE 3 is a fragmenteuy view, principally in section, and taken along the line 3-3 in FIGURE 2.

FIGURE 4 is an elevation, principally in vertical section, of the writing tool holder of FIGURE 2 wherein the same includes an adapter ring dimensioned to receive a mechanical drawing pen the barrel of which is threaded for engagement with the adapter ring.

FIGURE 5 is an enlarged detail of the top portion of the writing tool holder, with the adapter ring, of FIG- URE 4.

FIGURE 6 is a top plan of the structure shown in FIGURE 4, is fragmentary in nature, and also illustrates the mounting of the writing tool holder attachment to the scriber proper; for convenience of illustration the pen shown in FIGURE 4 is not shown in FIGURE 6.

FIGURE 7 is a side elevation similar to FIGURE 4, is partially sectioned, but illustrates the writing tool holder as incorporating a new adapter ring designed to receive another type of mechanical drawing pen.

In FIGURE 1 lettering scriber 10 is shown to include conventional scriber parts comprising scriber frame 11, tail pin 12 releasably secured thereto, and adjustable arm 13 adjustably secured by knurled thumb screw 14 to scriber frame 11, the adjustable arm 13 having scriber point 15. In conventional practice, the arm 13 is made movable or adjustable about the axis of thumb screw 14 so that letter-ing slant may be pre-determined as desired. Scriber frame 11 includes a front extension 16 provided with vertically oriented apertures 17 and 18 which contiguous with the longitudinal slit 19, the latter being selectively constricted by the conventional thumb screw 20 provided. In practice, thumb screw 20 is threaded through the aligned, threaded apertures 21 provided in the forward extension 16. Also preferably included in the lettering scriber design is a grasping boss 22 which is graspable by the thumb and fingers of the user and which is permissively removable from the scriber frame 11.

In normal practice the apertures 17 and 18 may be used, alternately, for receiving and retaining in place lettering tools commonly referred to as lettering points. Of course, conceivably but one aperture such as aperture 17 need only be provided. Fixed retention of the points is enabled through the provision of thumb screw 20.

The present invention contemplates the employment of a writing-tool holder 22 provided with pins 23 and 24 so dimensioned as to be adapted for pressed or other insertion into apertures 17 and I8 and retention therein by thumb screw Zti. Where but one aperture, such as aperture 17, is supplied, then but one pin (23) need be required; however, in this case, if the writing-tool holder 22 is in fact supplied with two pins 23 and 24, then the same may be mounted into the aperture (117) provided for that purpose and the rearmcst pin (24) of the writing-tool holder simply disposed outside ofand adjacent'the forward extension of the lettering scriber.-

FIGURE 2 indicates in elevation, the essential details scriher'1t). Where one type of' pensuch as that shown at V 29 in FIGURE 4 is to be employed, then its adapter ring of the basic writing-tool holder. The same is shown to.

include a hollow holder portion25 and a mounting por-. tion 26.;integral. therewith and provided with the afore-' mentionedprotrudingpins23 and 24 as shown in FIGURE 2. FIGURES 2 and 7 indicate that the writing-tool holder 22 is provided with respective pairs of mutually, vertically aligned'jslots 27 and 28. The'slots shall be referred to as adjustment slots for. purposes hereinafter set forth.

The mounting of writing-tool holder 22 to' the' lettering 7 paper. At this 'point the nuts 35 as retentive compression scriber lt) at scriber frame 11 thereof is best illustrated V in FIGURE 3 wherein it isseenthatthumb screw 20, in being threaded through the forward extensionlfi of scriber frame11,1operates.to' 'releasably secure in a very convenientand yet positive manner the pins 23 and 24 of writing tool holder 22 into the forward extension 16.

I FIGURES 4-6 areimportant and indicate adapter ring provision made to accommodate the writing-tool holder for writing tool inclusion. FIGURE 4 illustrates writing pen 29 as beingretained within writing-tool holder' 22 by means are tightened downand the scriber is;re ady for use. A similar operation is involved in positioning a different type of pen and adapter ring" (see FIGURE .7) in co'nnec tion withithe remaining slo'ts'28. 'Thus, in practice the same holder 22, withv appropriate, adapter ring provision being made, can accommodate several different types ofpens. 7

While particular embodiments of the" present invention .,have been Shawn; and described, it will be, obvious to those skilled in the ,art thatchanges andfmodifications may be made without departing from this. invention in its reader aspects, and,. therefore, the aim in the, appended provision of an adapter ring 30, the same being provided with outwardly extending threaded studs v31 and'32 which, V respectively receivewashers 33, 34 and knurled nuts 35,

36. Writing pen 29Jissupplied with threads37. on its barrelexterior; thus, the adapter ring is so dimensioned that its interior surface'rnay be threaded at 38 to co-' operatewith threads'37 of pen 29. g

It will be seen in FIGURE .4 that the slots 27Jaccom- 'We'claim: I a

.1. Ina lettering scriber including a scriber frame, a tail claims'isto cover all such changes and modifications as fall within the true spirit'and scope of thisinvention.

pin afi'ixed to and depending froma rearward portion of said scriber frame, and ascriber pointvaffixed to said frame J forwardly of saidtailpin, an improvement comprising a inodate the up-and-down, slideable adjustment of threaded I studs 31 and 32 in orderthat the pen point 40 of pen 29 be at a correct position for proper line production. If desired, an annular, C-configured springAI'may be held under compression within the hollow holder portion 25 and thus frictionally and springingly. engage thehollow holder portion 25. The same will serve. as an adjustable of pen point level will not be required for each insertion of the pen 29. r

I Correspondingly, wherea different type of pen (see pen 50 in FIGURE 'I), though threaded, is to be inserted into thehollow holder portion 25,'then a spring 42 similar to spring 41 in FIGURE4, and anew adapter ring 43; will be provided. Adapter ring @43 in FIGURE 7 includes threaded studs 44 and 45 which'cooperate with slots 28.

so as to permit. slideable adjustment of the adapter ring writing tool holderafiixedto said frame, said writing-tool holder'comprising a hollow holder portion, and an. interiorly threaded adapter Bring .cooperably disposed within said'hollow holder-portion and adapted to receive the threaded portion'of a barrelof a mechanical drawing pen,

and wherein said adapter ring is vertically adjustable within saidhollowholder portion and wherein said structure includesmeans for releasably securing saidadapter ring to 1 and within said hollow holder portion at a desired posistop abutment for adapter ring 30 so that readjustment 1 tion; and wherein said hollow holder portion of said writing tool holder was'proyided with vertical wallslots, said adapterring being provided with threaded studs protrud- Y '2; Structure according to claimal wherein said hollow holder portion of said writing tool holder includes ad- 43 within hollow holder portion 25. Again, spring 42 serves as an adjustablestop abutment. Washers 46and nuts 47 serve as releasable securement means in order to position the adapter ring 43 in a proper manner.

The manner of operation'of, the device which is the subject of the present invention is as follows. Clearly,

the writing-tool holder 22 is at thecrux of the present in-i vention, and it may be a separate part as shown in FIG- URE 1, or, conceivably m ay be an integral'part of a scriber unit. Where pens having threaded exteriors are to be used in conjunction with the basic scriber apparatus, then the writing tool holder willbecome a part of'the lettering ditional slot means for. receiving valternate, interiorly threaded adapter ring means designed to threadedly en- 6 gage another type of mechanical drawing pen.

- References'Cited bythe Examiner UNITED STATES PATENTS .1 2,868,172 1/59 "Kerman 1204.5 x 2,9 6,137; 12/60 Chevillon" 9s 3,053,341 9/6 2 Riepe 120-100 JEROME ISCHNALL, Primary Examiners LAWRENCE CHARLES, Examiner. 

1. IN A LETTERING SCRIBER INCLUDING A SCRIBER FRAME, A TAIL PIN AFFIXED TO AND DEPENDING FROM A REARWARD PORTION OF SAID SCRIBER FRAME, AND A SCRIBER POINT AFFIXED TO SAID FRAME FORWARDLY OF SAID TAIL PIN, AN IMPROVEMENT COMPRISING A WRITING TOOL HOLDER AFFIXED TO SAID FRAME, SAID WRITING-TOOL HOLDER COMPRISING A HOLLOW HOLDER PORTION, AND AN INTERIORLY THREADED ADAPTER RING COOPERABLY DISPOSED WITHIN SAID HOLLOW HOLDER PORTION AND ADAPTED TO RECEIVE THE THREADED PORTION OF A BARREL OF A MECHANICAL DRAWING PEN, AND WHEREIN SAID ADAPTER RING IS VERTICALLY ADJUSTABLE WITHIN SAID HOLLOW HOLDER PORTION AND WHEREIN SAID STRUCTURE INCLUDES MEANS FOR RELEASABLY SECURING SAID ADAPTER RING TO AND WITHIN SAID HOLLOW HOLDER PORTTION AT A DESIRED POSITION, AND WHEREIN SAID HOLLOW HOLDER PORTION OF SAID WRITING TOOL HOLDER WAS PROVIDED WITH VERTICAL WALL SLOTS, SAID ADAPTER RING BEING PROVIDED WITH THREADED STUDS PROTRUDING OUTWARDLY THROUGH SAID SLOTS, AND NUT MEANS THREADED UPON SAID THREADED STUDS FOR FRICTIONALLY AND COMPRESSINGLY SECURING SAID ADAPTER RING TO AND WITHIN SAID HOLLOW HOLDER PORTION OF SAID WRITING-TOOL HOLDER. 